<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        * {
            padding: 0px;
            margin: 0px;
        }

        body {
            display: flex;
            flex-direction: column;
            height: 100vh;
        }

        header {
            height: 100px;
            background: green;
            display: flex;
            align-items: center;
        }

        header div {
            width: 80px;
            height: 80px;
            background: red;
            margin-right: 20px;

        }

        header div:nth-child(1) {
            margin-left: 10px;
        }

        header div:nth-child(5) {
            margin-left: auto;;
            margin-right: 10px;;
        }

        main {
            flex: 1;
            display: flex;
            background: red;
        }

        aside {
            flex: 4;
            background: #1eff00;
        }

        aside .main {
            background: white;
            height: 350px;
            width: 450px;
            margin: 10px auto;
        }

        aside .child {
            display: flex;
            justify-content: space-around;
        }

        aside .child div {
            width: 100px;
            height: 100px;
            background: white;
        }

        article {
            flex: 6;
            flex-direction: column;
            background: #00D1FF;
        }

        article div {
            display: flex;
            flex: 1;
            margin: 24px auto;
            height: 40px;
            background: white;
        }
    </style>
</head>
<body>
<header>
    <div class="div1"></div>
    <div class="div2"></div>
    <div class="div3"></div>
    <div class="div4"></div>
    <div class="div5"></div>
</header>
<main>
    <aside>
        <div class="main">
        </div>
        <div class="child">
            <div class="div1"></div>
            <div class="div2"></div>
            <div class="div3"></div>
        </div>
    </aside>
    <article>
        <div class="div1"></div>
        <div class="div2"></div>
        <div class="div3"></div>
        <div class="div4"></div>
        <div class="div5"></div>
        <div class="div6"></div>
        <div class="div7"></div>
    </article>
</main>
</body>
</html>